Wrench.



J; `I'.y WRIGHT. WRENCH.

nnlonlon rmzn nov. 18,1901.

Patented Jan. 26, 1909.

HUM!HmlummuI..

"wil `un HUH l *of which the following UNITED sTATEs PATENT OFFICE. wasr. meer, or mainmise, marshman.

wensen.

spammen crimen .Patent Annina nlm mmanis. im. anni so. satana.

Patented Jan. 26, 1909..

delpha in the county of Philadelphia and' rack State Io Pennsylvania,have invented certain new 'and usefu lmprovnentsin Wrenches',

' a specication.

This'invention. oomprehends `certain new and useful improvements in thatclass of wrenches that are opened or closed by -a sliding adjustmenteffected through the instrumentalit of a rack formed integrally with thesha and a spring seated movable jaw frame carry' g a dog rigidlyconnected therewithfand designed for lookin engagement withthe teeth ofthe rack, an the invention has for'its object a very simple constructionof tool of this character which may be cheaply;

'manufactured and which will be compose comparatively'few parts that mabe readily assembled and thaty will be dura le.

'The invention consists in certain constructions and arrangements of theparts, that I shall hereinafter full describe and claim.

- Figure 1 is a side e ovation of my improved wrench. Fig. 2 is asimilar view'partly in section. Fi 3 is a transverse section on the line3-3 of ig. 2looking in the direction of the dart. Fig. 4 is a detailedge view of a' portion of the shank. Fig. 5 is a detailview of thespring.

Corresponding and like parts are referred to in the followin descriptionand indicated in all the views o the drawing by the same referencecharacters. y

Referring to the drawin the numeral 1 designates the shank'of myimproved wrench which is preferably formed integrally with thestationary aw 2, and which 1s provided at one end wit a referabltapering end 3 for thereception o the woo en or other handle 4, securedthereon in any desired way. 5 desi ates the movable jaw which is formedwith t e yokes 6 encircling the shank 1 and :JE which the movable jaw ismounted to 'de longitudinally on the shank, the openings in t e yokes 6being of such size aste permit a slightlateral play of the jaw on theshank as is customary with thls class of wre ches.

T shank 1 is formed on its inner edge with a longitudinally exten rack 7having transversely extending teet (as shown) the rack of the shankbeing preferably formed being forciblr as an. integral part o the shankand being tending wear surfaces 8 that are preferably flush with theouter edges of the teeth of the The movable jaw 5 is'fcrmed atits rearbounded on both sides by longitudinally exend with a segbmental socket9,said socket beera ingcf pref p ly uniform diameter throughout andbeing transversely considered, of more than 180 deglrees in curvature,the walls ofthe socket bor ering upon the opening in the raarmost oke 6and the adjacent portion of the bo y of the movable jaw converging, as`clearly illustrated in the drawing. The movable jaw 5 is formed on bothsides of the socket 9 with longitudinally extending wear surfacesfdesigned to coact with the Wear surfaces 8 when the movable jaw is slidlongitudinally on the shank 1.

10 designates a dog or toothed block which is shaped to accurately fitthe socket 9 and which is preferably held tightl therein by driven inthe soc et, said dog being forme on one edge with teeth 11 corres ending'to the teeth of the rack 7.

he movable jaw 5 is held under tension 'with the dog'lO Vout ofengagement with the rack 7, b? means of a plate spring 12 which extendsrom one yoke 6 to the other and which is formed with reduced ends 13tting Within the ends of the yokes, shoulders 14 being formed at thebases of the reduced ends 13, said ,shoulders abutting against the sideedges of the yokes and thereby holding the s ring 12 securely in placebut in a remova le manner. It is to be .understood that the spring 12 isdetachable only after the movab e jaw 5 has been slipped off the shank1, this operation -bein rendered possible by the detachable hand e 4.

I am aware that it is not broadly new with me to provide a wrench, ofthis character with an integral rack formed in the shank and withaspring held by its own formation without the aid of rivets or the like,in the yokes of the movable aw, and hence I do not claim suchconstruction or arrangement of the arts broadly; but,

at I claim as new and desire to secure by Letters Patent is:

1.V The herein described wrench, comprising a shank, handle portion,stations Jaw, the shankbeing formed with a lonitu inally extending rackand with lon 'tu inall extending wear surfaces on bot sides o said rack,said wear surfaces being flush with the movable jaw mounted to slide onsaid shank and sprin ressed in cne direction laterally;i

`said move e j aw being formed at its rear en with a socket the sidewalls of which converge towerds the opening in the movable jaw thataccommodates the shank, the walls of said opening where they border uponthe socket being formed with lon itudinally extending Wear surfacesadapte to coact with the weer surf-aces of the shank, and a do ttinfrictionally within said socket and close y conforming thereto andformed. in one edge with teeth designed to engege the teeth of the rack.

2. A'Wrench of the character described, comprisin a. handle andrelatively stetionary Jaw, t e shank being formed wlth a rack,

a movable j ew provided with two yokes by which it is mounted to slideon said shank a. d og carried by said movable` jaw and designed toengage the rack, and e. plate sprin extending from one oke to the otherand formed with reducedT ends and with out- Wardly facing shoulders etthe bases of the reduced ends, said ends fitting Within the ends of theyokes respectively and the shoulders abutting against the opposinginterior walls of the res ective yokes, es and for .the purpose setfertili. l

In testimony whereof I aHX my signature in presence cf two Witnesses.

JAMES F. WRIGHT. VVitnessesz,

THOMAS J. ELLIs, CHARLES WM. DE'rrnnY.

